Compartment plate

One of several rigidly articulated plates forming wall in sessile cirripeds.
[McLaughlin, 1980]

(Taxon-specific: Subclass Cirripedia) In unstalked barnacle, one of up to eight overlapping/articulating plates forming wall which encircles body. May include form anterior to posterior end: single rostrum, paired rostrolaterals, laterals, carinolaterals, single carina, and in asymmetrical form, also fixed scutum and fixed tergum.
(syn. compartmental plate, mural plate)
[Stachowitsch, 1992]